#cabecera {
	
	height: 100px;
	width: 1120px;
	background: #F678AC;
	margin: auto;
	
}

#footer {

	width: 1120px;
	height: 50px;
	background: #765498;
	margin: auto;
	clear: both;

}

#megaestructura {
	
	width: 1120px;
	margin: auto;
	
}

#contenedor_izquierda {

	width: 800px;
	margin-top: 20px;
	margin-bottom: 20px;
	background: #765ACD;
	float: left;

}

#contenedor_derecha {

	width: 300px;
	margin-top: 20px;
	margin-bottom: 20px;
	background: #78A6FE;
	float: right;

}